Home Phone comparison Xiaomi Mi 9 and Samsung Galaxy A8 (2018) - Which is better?

Xiaomi Mi 9 vs Samsung Galaxy A8 (2018)

50 out 100
Xiaomi Mi 9
VS
36 out 100
Samsung Galaxy A8 (2018)
Xiaomi Mi 9
Samsung Galaxy A8 (2018)

Compared 2 smartphones : Xiaomi Mi 9 Manufactured in April, 2019, with display 6.39 with chipsetQualcomm Snapdragon 855, vs Samsung Galaxy A8 (2018), Manufactured in January, 2018 with chipsetSamsung Exynos 7 Octa 7885. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Xiaomi Mi 9
  • Larger display: 6.39in
  • Higher battery capacity: 3300mAh vs 3000mAh
  • Infrared port
Reasons to choose Samsung Galaxy A8 (2018)
  • Higher pixel density: 441ppi
  • Lighter design: 172g vs 173g
  • Supports Dolby Atmos

Versions

Available versions and configurations
Memory Options - 6/64 GB
- 6/128 GB
- 8/64 GB
- 8/128 GB
- 8/256 GB		 - 4/32 GB
- 4/64 GB

Review

Key Specs Xiaomi Mi 9 and Samsung Galaxy A8 (2018)
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Xiaomi Mi 9
vs
Galaxy A8 (2018)

Display

Display quality comparison
Type AMOLED Super AMOLED
Size 6.39 in 5.6 in
Resolution 1080x2340 pixels 1080x2220 pixels
Aspect ratio 19.5:9 18.5:9
Pixel density 403 ppi 441 ppi
Refresh rate 60 Hz 60 Hz
Adaptive refresh rate No No
Max brightness 600 nits 390 nits
HDR support Yes HDR10 No
Screen-to-body ratio 85.3 % 75.5 %
Features - Always-On Display
- DC dimming		 n/a
Display test
Peak brightness (auto)
Xiaomi Mi 9
619 nits
Samsung Galaxy A8 (2018)
586 nits
sRGB gamut95.4 %n/a
PWM (Flicker)245 Hz242 Hz
Response time4.2 ms4.6 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Xiaomi Mi 9], [Samsung Galaxy A8 (2018)]

Design & Build

Design and ergonomics comparison
Height 157.5 mm (6.2 in) 149.2 mm (5.87 in)
Width 74.6 mm (2.94 in) 70.6 mm (2.78 in)
Thickness 7.6 mm (0.3 in) 8.4 mm (0.33 in)
Weight 173 g (6.1 oz) 172 g (6.07 oz)
Water resistance No IP68
Back panel Glass Glass
Frame Metal Metal
Colors - Black
- Blue
- Purple		 - Black
- Gold
- Blue
Fingerprint sensor Yes In-Display Yes rear
Screen-to-body ratio
Xiaomi Mi 9
85.3 %
Samsung Galaxy A8 (2018)
75.5 %

Performance

Testing Xiaomi Mi 9 and Samsung Galaxy A8 (2018) In benchmarks
Processor
Chipset Qualcomm Snapdragon 855 Samsung Exynos 7 Octa 7885
Max Frequency 2840 MHz 2200 MHz
CPU Cores 8 (1 + 3 + 4) 8 (2 + 6)
Architecture - 4/1.8 (Cortex-A55 (Kryo 485 Silver))
- 3/2.42 (Cortex-A76 (Kryo 485 Gold))
- 1/2.84 (Cortex-A76 (Kryo 485 Gold))		 - 6/1.6 (Cortex-A53)
- 2/2.2 (Cortex-A73)
Process TSMC Samsung
Transistor Size 7 nm 14 nm
Neural Processor Hexagon 690 No
Graphics Adreno 640 Mali-G71 MP2
GPU Cores 768 32
GPU Frequency 585 MHz 770 MHz
FLOPS 898.5 GFLOPS 70.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi Mi 9
898
Samsung Galaxy A8 (2018)
n/a
Geekbench 6 (Multi-Core)
Xiaomi Mi 9
2206
Samsung Galaxy A8 (2018)
n/a
Geekbench 6 (Single-Core)898n/a
Geekbench 6 (Multi-Core)2206n/a
AnTuTu 10
AnTuTu 10
Xiaomi Mi 9
651041
Samsung Galaxy A8 (2018)
202681
CPU20930073673
GPU19174726657
Memory11380950080
UX13618552271
NanoReview Score651041202681
3DMark Wild Life
3DMark Wild Life
Xiaomi Mi 9
3100
Samsung Galaxy A8 (2018)
n/a
Max Surface Temp.35.6 °Cn/a
Stability91 %n/a
Graphics Test18 fpsn/a
Graphics Score3100n/a
Sources: 3DMark [Xiaomi Mi 9]
PCMark 3.0
PCMark 3.0
Xiaomi Mi 9
10649
Samsung Galaxy A8 (2018)
n/a
Writing score14618n/a
Web score7084n/a
Video editing6715n/a
Data manipulation7931n/a
NanoReview Score10649n/a

Memory

RAM
RAM Size 6 GB 4 GB
Memory Type LPDDR4X LPDDR4
Memory Frequency 2133 MHz 1333 MHz
Channels 2 2
Storage
Storage Capacity128 GB- 32 GB
- 64 GB
Storage TypeUFS 2.1eMMC 5.1
Memory CardNoMicroSD

Software

OS Android 9.0 (Upgradeable to Android 11) Android 7.1.1 (Upgradeable to Android 9)
OS Size 13.5 GB n/a
UI Skin MIUI 12.5 One UI 2.0

Battery

Volume 3300 mAh 3000 mAh
Max Charging Power 27 W 18 W
Battery Type Li-Po Li-ion
Removable No No
Wireless Charging Yes (20 W) No
Reverse Charging No No
Fast Charging Yes Quick Charge 4 (50% in 30 min) Yes Samsung Adaptive Fast Charge (50% in 30 min)
Full Charge Time 1:30 h 1:35 h
Battery Life Test
Battery Life
Xiaomi Mi 9
17:14
Samsung Galaxy A8 (2018)
17:10
Web Browsing06:08 h06:38 h
Video Playback11:37 h11:19 h
Games04:07 h04:20 h
Standby Mode83 h80 h

Main camera

Matrix 48 MP 16 MP
Photo resolution 8000x6000 pixels 4920x3264 pixels
Zoom Optical, 2x Digital
Flash Dual LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording Yes (Up to 60 fps) No
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 960 fps (1080p) No
Wide-angle lens 117 ° n/a
Lenses count Standard: 48 MP
Telephoto: 12 MP
Ultra-wide: 16 MP		 Standard: 16 MP
Features - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix48 MP16 MP
Aperturef/1.8f/1.7
Focal length27 mm26 mm
SensorSony IMX586Samsung S5K2P6SX
Sensor size1/21/2.8
Pixel size0.8 μm1.12 μm
AutofocusLaser autofocusPhase autofocus
StabilizationDigitalDigital
Telephoto
Matrix12 MPn/a
Aperturef/2.2n/a
Focal length54 mmn/a
SensorSamsung S5K3M5n/a
Sensor size1/3.6n/a
Pixel size1 μmn/a
StabilizationDigitaln/a
Ultra-wide lens
Matrix16 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
SensorSony IMX481n/a
Sensor size1/3.0n/a
Pixel size1 μmn/a
StabilizationDigitaln/a
Main camera DxOMark results
Photo quality
Xiaomi Mi 9
112
Samsung Galaxy A8 (2018)
82
Video quality
Xiaomi Mi 9
99
Samsung Galaxy A8 (2018)
74
Overall camera score
Xiaomi Mi 9
107
Samsung Galaxy A8 (2018)
79
Sources: DxOMark [Xiaomi Mi 9]

Front camera

Matrix 20 MP 16 MP
Photo resolution 5184x3880 pixels 4608x3456 pixels
Aperture f/2.0 f/1.9
Focal length 18 mm 27 mm
Sensor CMOS Samsung S5K3P8SP
Sensor size 1/3 1/3.1
Pixel size 0.9 μm 1 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
Bluetooth version 5 5
Bluetooth features LE, A2DP PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- USB-Host mode
- OTG		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
NFC* Yes Yes
Infrared Port Yes No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM 850, GSM 900, GSM 1800, GSM 1900GSM 850, GSM 900, GSM 1800, GSM 1900
3G BandsHSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100HSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100
LTE Bands*LTE (B800/B900/B1800/B2100/B2300/B2500/B2600)LTE (B800/B850/B900/B1700/B1800/B1900/B2100/B2300/B2500)
LTE category2011
5G SupportNoNo

Sound

Speakers Mono Mono
3.5 mm Jack No Yes
FM Radio No Yes
Dolby Atmos No Yes
Speaker Test
Max Volume
Xiaomi Mi 9
87.1 dB
Samsung Galaxy A8 (2018)
85 dB

Other

Class Flagship Mid-range
Announced February, 2019 yr December, 2017 yr
Release Date April, 2019 yr January, 2018 yr
Launch Price ($) 460 480
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Xiaomi Mi 9 the clear winner in this comparison.

Survey

Which smartphone would you pick?
0 (0%)
0 (0%)
Total Votes: 0

User comments

Share your opinion or ask questions below